operkoi wrote:for a unit of pink horrors that i have paid points to have blue and brimstones and split the unit how are save roles performed and units removed? Do I have to remove pink horrors from failed wound rolls if i want to use the 4+ invulnerable save. If i want to use the blue horrors as chaff do i have to use the 5+ and if i fail more saves then remaining blue horrors do i then have to remove pink horrors or brimstone horrors?
You have to resolve each models attacks one at a time, you cannot fast roll in this instance. If your horrors are attacked by 5 models with bolters, each bolter's shots have to be resolved individually in full before you can continue on.
That means the first bolter can kill a pink, have it split, then the 2nd bolter can kill a blue, have it split, etc.